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<table width="100%" summary="page for YouthRisk2009"><tr><td>YouthRisk2009</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Youth Risk Survey</h2>

<h3>Description</h3>

<p>Survey of students in grades 9-12 concerning health-risk behiviors
</p>


<h3>Format</h3>

<p>A dataset with 500 observations on the following 6 variables.
</p>

<dl>
<dt><code>Sleep</code></dt><dd><p>Average hours sleep on school night (<code>10 or more hours</code>, <code>9 hours</code>, down to
<code>4 or less hours</code>)</p>
</dd>
<dt><code>Sleep7</code></dt><dd><p>Seven or more hours of sleep? (<code>0</code>=no or <code>1</code>=yes)</p>
</dd>
<dt><code>SmokeLife</code></dt><dd><p>Ever smoked? (<code>No</code> or <code>Yes</code>)</p>
</dd>
<dt><code>SmokeDaily</code></dt><dd><p>Regular smoker? (<code>No</code> or <code>Yes</code>)</p>
</dd>
<dt><code>MarijuaEver</code></dt><dd><p>Ever smoked marijuana? (<code>0</code>=no or <code>1</code>=yes)</p>
</dd>
<dt><code>Age</code></dt><dd><p>Age (in years)</p>
</dd>
</dl>



<h3>Details</h3>

<p>Data from the Centers for Disease Control's Youth Risk Behavior Surveillance System (YRBSS).
</p>
<p>This data set is from the first edition, but not used in the second edition.
</p>


<h3>Source</h3>

<p>http://www.cdc.gov/HealthyYouth/yrbs/index.htm
</p>


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